From 3b0bfe9422c77837cac3970c028645644a4d6783 Mon Sep 17 00:00:00 2001
From: Darien Raymond <admin@v2ray.com>
Date: Sun, 29 Jul 2018 15:10:06 +0200
Subject: [PATCH] check empty

---
 transport/internet/kcp/receiving.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/transport/internet/kcp/receiving.go b/transport/internet/kcp/receiving.go
index 3bf5ee75..5482d45a 100644
--- a/transport/internet/kcp/receiving.go
+++ b/transport/internet/kcp/receiving.go
@@ -205,6 +205,9 @@ func (w *ReceivingWorker) ReadMultiBuffer() buf.MultiBuffer {
 
 func (w *ReceivingWorker) Read(b []byte) int {
 	mb := w.ReadMultiBuffer()
+	if mb.IsEmpty() {
+		return 0
+	}
 	nBytes, err := mb.Read(b)
 	common.Must(err)
 	if !mb.IsEmpty() {